Android传感器利用Senser实现不同的传感器

传感器有不同的类型，以下是我列出的光线，加速度，风向传感器，在测试不同传感器的时候都需将传感器管理的onResume中
sensorManager.registerListener(myListner,sensorOri,sensorManager.SENSOR_DELAY_UI);

第二个参数改为相应的传感器，此dem中我加入了一张指南针图片作为示例：

activity_main.xml

 <Button
 android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="查看所有支持的传感类型"
android:onClick="getAllSensors"
 />
<TextView
 android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="30sp"
android:id="@+id/tv_main_result"

 />

<ImageView
 android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/sounth"
android:id="@+id/iv_main_images"

 />

java代码中注释掉的部分都是一种传感器的测试
MainActivity.java

package com.example.cindy_sounth;

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.List;

public class MainActivity extends AppCompatActivity {

private SensorManager sensorManager;
private Sensor sensorLight;
private Sensor sensorAcc;
private Sensor sensorOri;
private TextView tv_main_result;
private MyListner myListner;
private ImageView iv_main_images;
private float current;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
//得到图片
        iv_main_images = (ImageView) findViewById(R.id.iv_main_images);

        tv_main_result = (TextView) findViewById(R.id.tv_main_result);

//得到传感器的管理者
        sensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
//得到光线传感器
// sensorLight = sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);

//获得加速度传感器
// sensorAcc = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
//获取风向传感器
        sensorOri = sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);



        myListner = new MyListner();



    }
//注册一个监听(监听某一个传感器的值)
@Override
protected void onResume() {
super.onResume();

        sensorManager.registerListener(myListner,sensorOri,sensorManager.SENSOR_DELAY_UI);
    }
        class MyListner implements SensorEventListener{

private WindowManager.LayoutParams layoutParams;

//当你的值发生改变
@Override
public void onSensorChanged(SensorEvent event) {
float[] f=event.values;
//测试获取光线传感器的值(光线值)
// float light= f[0];
// tv_main_result.setText(light+"");

//测试获得加速度传感器
// float x= f[0];
// float y= f[1];
// float z= f[2];
// tv_main_result.setText("x="+x+"\ny="+y+"\nz="+z);

//测试获取风向传感器
// float x= f[0];
// float y= f[1];
// float z= f[2];
// tv_main_result.setText("x="+x+"\ny="+y+"\nz="+z);

//加图片测试指南针
float x= f[0];
float y= f[1];
float z= f[2];
                tv_main_result.setText("x="+x+"\ny="+y+"\nz="+z);

//实例化旋转动画
                RotateAnimation rotateAnimation=new RotateAnimation(current,-x,RotateAnimation.RELATIVE_TO_SELF,0.5f,RotateAnimation.RELATIVE_TO_SELF,0.5f);
                rotateAnimation.setDuration(200);
                current=-x;
                iv_main_images.startAnimation(rotateAnimation);
//改变屏幕的亮度
//先拿到屏幕
// WindowManager.LayoutParams layoutParams= getWindow().getAttributes();
// layoutParams.screenBrightness=light/225f;
// getWindow().setAttributes(layoutParams);

            }
//当值发生精度改变
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {

            }
        }



@Override
protected void onDestroy() {
super.onDestroy();
        sensorManager.unregisterListener(myListner);
    }
public void getAllSensors(View view){
        List<Sensor> sensors= sensorManager.getSensorList(Sensor.TYPE_ALL);
for (Sensor sensor : sensors) {
            Log.i("test", sensor.getName());
// sensor.getPower();
        }

       }



}